JP3221016U - Seated cushion - Google Patents

Abstract

[PROBLEMS] Even if a user such as a driver moves his buttocks during use, the effect of reducing fatigue on the thigh is less likely to be impaired, and conversely, even if the user moves the thigh, the influence thereof The fatigue reducing effect on the buttocks is less likely to be impaired, and even if the user moves one of the left and right thighs, the fatigue reducing effect on the opposite thigh is less likely to be impaired Provide a cushion. SOLUTION: A flexible base sheet is laminated with a first area Z1 on which a user's buttocks are put and a pair of left and right second areas Z2 and Z2 on which the user's left and right thighs are put. The cushion material 10 integrated is provided. A gap 12 formed by removing the cushion material 10 is provided between the first region Z1 and the pair of left and right second regions Z2 and Z2 and between the pair of left and right second regions Z2 and Z2. [Selected figure] Figure 1

Description

  The present invention relates to a seating cushion, and more particularly, to a seating cushion in which measures are taken to reduce fatigue of the buttocks and thighs of a user seated on a seat or the like.

  A seat cushion that is conventionally laid on the seat to reduce fatigue of the driver's buttocks and thighs by keeping driving a car for a long time in the same posture, and thus to prevent or reduce back pain. In many cases, the driver is seated and driving is continued. In the conventional seat cushion of this type, it is said that the cushioning property reduces the load applied to the buttocks and thighs of the driver and can prevent or reduce low back pain.

  On the other hand, a foam layer employing latex foam as a cushioning material has been known as a prior art (see, for example, Patent Document 1). According to the foam layer proposed by this patent document 1, the pressure received on the surface of the body can be evenly dispersed by the positive resilience which is the characteristic of the latex foam, so that the feeling of stress etc. can be alleviated, and the bed or chair It is said that it is possible to prevent fatigue and the like caused by stress and pressure coming from hardness and the like.

Utility model registration 3070824 gazette

  However, in the foam layer proposed by Patent Document 1, the elasticity unique to the latex foam acting on the user's body at the time of sitting helps to alleviate the load applied to the buttocks and thighs, and the buttocks and thighs The effect of relieving the fatigue of the department was only exhibited. Therefore, when the driver of the car uses the foam layer on the seat, for example, when the driver moves the buttocks, the left and right thighs are placed on the foam layer through the deformation of the foam layer. The elasticity of the foam layer acting on the body significantly changes, and the effect of reducing fatigue in the thigh is impaired, or conversely, when the driver moves the thigh, the foam layer Through the deformation, the elasticity of the foam layer acting on the buttocks placed on the foam layer may be significantly changed, and the action of reducing the fatigue of the buttocks may be impaired.

  The present invention has been made in view of the above situation, and even if a user such as a driver moves his buttocks during use, the effect of alleviating fatigue on the thighs is less likely to be impaired by this effect. Conversely, even if the user moves the thighs, the effect of reducing fatigue on the buttocks is less likely to be impaired, and even if the user moves one of the left and right thighs, An object of the present invention is to provide a seating cushion which is less likely to lose the fatigue reducing effect on the opposite thigh.

  A seating cushion which is used by being laid on a seat and has a first area on which the buttocks of the user are placed and a pair of left and right second areas on which the left and right thighs of the user are placed. A cushioning material laminated and integrated on a flexible base sheet is provided, and the entire first boundary between the first region and the pair of left and right second regions, and the pair of left and right second regions A gap formed by removing the cushioning material is provided in the entire area of the second boundary portion between each other.

  According to the seating cushion configured as described above, the first boundary between the first region of the cushion material and the pair of left and right second regions and the second boundary between the pair of left and right second regions The first region and the pair of left and right second regions of the cushion material are divided by the gap provided, and similarly, the second region of the cushion material and the second region of the right are divided. It becomes form. Therefore, the influence of the deformation of the cushioning material to which the first area belongs does not easily extend to the cushioning material to which the pair of left and right second areas belongs, and similarly, the influence of the deformation of the cushioning material to which the left or right second area belongs is opposite It becomes difficult to reach the cushioning material to which the side 2nd area belongs. Therefore, even if the user moves the buttocks while using the seating cushion, it is less likely that the fatigue alleviating action on the left and right thighs will be impaired, and the left or right thighs are moved. Also, it is less likely that the effect of reducing the fatigue on the buttocks and the opposite thigh will be impaired.

  In the present invention, it is desirable to adopt a configuration in which a stealing recess is provided at each of the front left and right corner portions of the cushion material having a rectangular or substantially rectangular shape in plan view. With this configuration, when the user sits in the lateral direction on the seat cushion laid on the seat, the front left and right corner portions of the cushion material are not caught by the action of the stealing recess, and the ease of use is increased. Improve.

  In the present invention, it is desirable to adopt a configuration in which the cushioning material is made of a latex foam provided with a positive resilience having a recess which is a through hole or a recess. In this invention, the latex foam forming the cushioning material has a unique elasticity, i.e., positive resilience, which is excellent in the pressure dispersion force to uniformly support the buttocks and thighs in contact with the latex foam. In the first area, it exerts elasticity that wraps the buttocks, and in the second area, exerts elasticity that wraps the thighs, and the fatigue sensation alleviation effect of the buttocks and thighs is remarkable. Demonstrate. Furthermore, there is also an advantage that the air permeability exhibited by having the recess portion formed by the through hole or the recess makes it difficult to cause discomfort due to humidity.

  In the present invention, it is desirable to adopt a configuration in which the base sheet is made of urethane foam. Urethane foam is not only capable of easily producing hard type (stiff and hard feeling) and rubber type (striking and repulsive feel), etc., but also the first area mentioned above Also, even if the pair of left and right second regions is divided by the above-mentioned gap, it exerts sufficient strength and durability for connecting cushion materials to which those respective regions belong.

  In the present invention, it is desirable to adopt a configuration in which the thickness of the cushion material is 15 to 29 mm, the thickness of the base sheet is 5 to 15 mm, and the width of the gap is 5 to 15 mm. When the thickness of the cushioning material or the base sheet is too thick, the appropriate use place is remarkably limited, and when it is too thin, it is not suitable for use as a seating cushion for reducing fatigue of the bottom and heel and thigh. Use versatility is reduced. When the thickness of the cushioning material or the base sheet is within the above range, it can be suitably used as a general-purpose sitting cushion for reducing fatigue of the buttocks and thighs. In addition, if the gap between the first and second regions of the cushioning material and the gap between the left and right second regions are too wide, the first and second regions on which the buttocks and / or thighs are placed are sufficient. When the seating cushion is bent and deformed by the weight of the user when the gap is too narrow, it is difficult to ensure the large size, and the influence of the deformation of the cushioning material to which the first area and the second area belong is The effect of making it hard to reach the area of If the width of the gap is within the above range, it is easy to secure a sufficiently large size in the first area and the second area on which the buttocks and thighs are placed, and a cushion to which the first area and the second area belong The effect of making it difficult for the deformation of the material to spread to the other regions is unlikely to be impaired.

  In the present invention, it is desirable to adopt a configuration in which the seating cushion is composed of the base sheet and the cushion material, and a flexible cover having air permeability that covers the base sheet and the cushion material. Various materials such as fabric, leather, and paper can be selected and used for the cover, and by covering the cushion material with the cover, the handling property and touch of the seating cushion can be improved, and the seat can be used. It is also easily possible to make it non-slippery when used in a bed.

  As described above, according to the seating cushion according to the present invention, even if the user moves the buttocks during use, it is less likely that the fatigue alleviating action on the thighs will be impaired, and vice versa In addition, even if the user moves the left or right thigh, it is less likely that the effect of alleviating the fatigue on the buttocks and the other thigh will be impaired, thereby preventing or reducing back pain. It is possible to provide a seating cushion that can be

It is a partially broken perspective view of a seating cushion concerning an embodiment of the present invention. It is a front view of a cushion material laminated and integrated on a base sheet. It is a side view of a cushion material. It is the schematic perspective view which showed the state which arrange | positioned the seating cushion in the seat for motor vehicles. FIG.

  FIG. 1 is a partially cutaway perspective view of a seating cushion A according to an embodiment of the present invention. In the figure, 10 is a cushioning material, 40 is a flexible base sheet, and 50 is a cover.

  FIG. 2 is a front view of the cushioning material 10 integrally laminated on the base sheet 40, and FIG. 3 is a side view of the cushioning material 10. As shown in FIG.

  As shown in FIG. 2, the cushion material 10 has one first area Z1 and a pair of left and right symmetrical shaped second areas Z2 and Z2. The first area Z1 is an area on which the user's buttocks are placed, and the pair of left and right second areas Z2 and Z2 are areas on which the user's left and right thighs are separately placed. Further, the cushioning material 10 is laminated and integrated on the flexible base sheet 40, and the cushioning material 10 and the base sheet 40 are bonded by an appropriate bonding means, for example, bonding.

  As shown in FIG. 1 or 2, the entire area of the first boundary portion a between the first area Z1 of the cushion material 10 and the pair of left and right second areas Z2 and Z2 and the pair of left and right second areas Z2 and Z2 A gap 12 of a fixed width formed by a portion (cutaway portion) where the cushion material 10 is cut out is provided in the entire second boundary portion b between the two. Therefore, while the cushion material 10 to which the first region Z1 belongs and the cushion material 10 to which the pair of left and right second regions Z2 and Z2 belong is connected by the base sheet 40, the first region Z1 and the second region Z2 , Z2 are completely divided by the gap 12 between them. Similarly, the cushioning material 10 to which the second region Z2 on the left side belongs and the cushioning material 10 to which the second region Z2 on the right side belong are connected between the second regions Z2 and Z2 while being connected by the base sheet 40 The gap 12 is completely divided. In the illustrated example, the first boundary portion a forms a substantially arc shape, and both ends thereof are positioned at the rear end edge of the cushion material 10, while the second boundary portion b has a substantially arc-shaped first shape. The first end of the cushioning material 10 is located at the front end edge of the cushioning material 10 and extends straight forward from the starting point located at the center of the first boundary portion a. In this regard, the shape of the first boundary portion a is not limited to the illustrated example, and may be any shape that can form the first region Z1 of a shape and size that allows the user to put on the buttocks. For example, the first boundary portion a may have a linear shape extending laterally, or may have an angular recessed shape. Similarly, the shape of the second boundary portion b is not limited to the example shown in the drawings, and any shape capable of forming the second region Z2 having a shape and a size capable of placing the user's thighs thereon can be formed. For example, the second boundary b may be a waveform.

  The cushion material 10 to which the first area Z1 and the second areas Z2 and Z2 belong is made of a synthetic resin foam such as polyethylene foam or urethane foam, a resin sheet having a large number of cells, and a flexible material such as cotton cloth. Although, in this embodiment, a latex foam with positive resilience is employed. The positive resilience of the latex foam is the elasticity of sinking at a rate corresponding to the magnitude of the applied load and repelling from the inside with a force equal to the load. This positive resilience is a unique elasticity of the latex foam which is different from the flexibility of the above-mentioned synthetic resin foam, cotton cloth and the like.

  As shown in FIG. 2, the latex foam employed in the cushioning material 10 to which the first area Z1 and the second areas Z2 and Z2 belong is a recess 21 having a large number of through openings throughout the entire area thereof. These heat sinks and heat sinks can be enhanced by the recesses 21. In addition, it is understood that the recess 21 also serves to adjust the flexibility of the cushion material 10, and the flexibility is enhanced by increasing the number of the recesses 21 or increasing the size of the recesses 21. There is. In this embodiment, although the recess 21 is formed by a through hole, this point may be formed by a non-through recess or by a slit hole or recess. Good. Further, the plurality of recesses 21 may be mixed with the passage and the recess.

  The base sheet 40 has a certain degree of flexibility. In this embodiment, the flexibility of the base sheet 40 is smaller than the flexibility of the cushion material 10. In other words, the flexibility of the base sheet 40 is larger than the flexibility of the flexible cushion material 10. In this embodiment, a sheet-like urethane foam is employed as the base sheet 40. Even if the first area Z1 and the pair of left and right second areas Z2 and Z2 are divided by the gap 12, the urethane foam connects the cushion members 10 to which the respective areas Z1, Z2 and Z2 belong. Demonstrate sufficient strength and durability. In addition, it is also possible to use sheet-like cloth, leather, or paper instead of the urethane foam for the base sheet 40.

  The thickness T1 of the cushioning material 10 shown in FIG. 3 is 15 to 29 mm, the thickness T2 of the base sheet 40 is 5 to 15 mm, and the width S of the gap 12 shown in FIG. 2 is 5 to 15 mm. Is desirable. Properly setting the thickness of the cushioning material 10 and the base sheet 40 helps to select the application of the seating cushion A and enhance its versatility. If the thickness of the cushioning material 10 or the base sheet 40 is too thick or too thin, it will not be suitable for use as a seating cushion for reducing fatigue in the buttocks or thighs, or the suitable use place will be significantly limited. Use versatility is reduced. When the thickness of the cushioning material 10 and the base sheet 40 is within the above range, it is possible to provide a general-purpose seating cushion for reducing fatigue of the buttocks and thighs, and in particular, a car seat Suitable for general use. In addition, when the gap 12 between the first region Z1 and the second regions Z2 and Z2 of the cushion material and the gap 12 between the second regions Z2 and Z2 on the left and right sides are too wide, the buttocks and the thighs are placed When it becomes difficult to secure a sufficiently large size in the first area and the second area, and the gap 12 is too narrow, when the seating cushion A is bent and deformed by the weight of the user, the first area Z1 and the second area The effect of making the influence of the deformation of the cushioning material 10 to which Z 2 and Z 2 belong to the other region difficult to be easily lost. If the width S of the gap 12 is within the above range, it is easy to secure a sufficiently wide size in the first area Z1 and the second areas Z2 and Z2 on which the buttocks and thighs are to be placed. The effect of making the influence of the deformation of the cushioning material 10 to which the second regions Z2 and Z2 belong to the other regions difficult to be impaired.

  On the other hand, the cover 50 shown in FIG. 1 is formed by sewing a stretchable cloth according to the shape of the cushion material 10. In the cover 50, air permeability is enhanced by adopting a mesh fabric 51 in portions covering the upper end surface and the left and right side surfaces of the cushion material 10. Various materials such as leather, paper and the like can be selected and used for the cover 50. By appropriately selecting the material of the cover 50, the handling property and the touch of the seating cushion A are improved. It is also possible to easily make it hard to slip when used by laying it on a seat.

  The use state and action of the seating cushion A described above will now be described. FIG. 4 is a schematic perspective view showing a state in which the seat cushion A is laid on the automobile seat 100, and FIG. 5 is an operation explanatory view.

  As shown in FIG. 4, the seating cushion A is placed on the seating portion 110 of the seat 100 in an overlapping posture. When the user is seated on the seating portion 110 of the seating 100 on which the seating cushion A is laid, the buttocks of the user are placed on the cushioning material 10 to which the first area Z1 shown in FIG. The left and right thighs of the user are placed on the cushions 10, 10 to which the pair of second regions Z2, Z2 belong.

  In the seating cushion A, the first area Z1 of the cushion material 10 and the pair of left and right second areas Z2 and Z2 are divided, and the second area Z2 of the left side and the second area Z2 of the right side of the cushion material 10 are also divided. Therefore, the influence of the deformation of the cushioning material 10 to which the first region Z1 belongs hardly affects the cushioning materials 10 and 10 to which the pair of left and right second regions Z2 and Z2 belongs, and similarly, the second region Z2 on the left or right The influence of the deformation of the cushioning material 10 to which it belongs is less likely to extend to the cushioning material 10 to which the second region Z2 on the opposite side belongs. For example, even if the cushioning material 10 to which the second region Z2 on the right side belongs is deformed by the weight of the thigh F on one side (right side) of the user as shown in FIG. The influence of the deformation of the material 10 does not easily reach the positive resilience of the cushion material 10 to which the second region Z2 of the other side (left side) belongs. The same applies to the relationship between the first area Z1 and the pair of left and right second areas Z2 and Z2. Therefore, even if the user moves the buttocks while using the sitting cushion A, it is less likely that the fatigue alleviating action on the left and right thighs will be impaired, and the left or right thighs are moved. Also, it is less likely that the effect of reducing the fatigue on the buttocks and the opposite thigh will be impaired.

  By the way, when sitting on the seat 100 of a car, the user often sits on the seat 100 in a lateral direction and at that time, if the shape of the seating cushion A is substantially rectangular in plan view, the seating cushion A In many cases, it may be difficult for the user to get stuck at the front left and right corners. Therefore, in this embodiment, as shown in FIG. 1, FIG. 2, FIG. 4, etc., the stealing recesses 11, 11 are provided in the front left and right corner portions of the cushion material 10 respectively. In this way, when the user gets on the seat 100 from the side, the action of the stealing recesses 11, 11 prevents the corner from being caught.

  The seating cushion A according to the present invention can be used by being laid on a seat 100 of a car, and can be used in various seatings such as a sofa or chair in a living room, a park bench, a train seat, etc. is there.

A Seated cushion a First boundary portion b Second boundary portion S Clearance width T1 Thickness of cushioning material T2 Thickness of base sheet Z1 First region Z2 Second region 10 Cushioning material 11 Stealing recess 12 Clearance 21 Recess 40 Base sheet 50 cover 100 seat

Claims (6)

A seating cushion used by laying on a seat,
A cushion material laminated and integrated on a flexible base sheet is provided having a first area on which the user's buttocks are placed and a pair of left and right second areas on which the user's left and right thighs are placed. And the cushion in the entire area of the first boundary between the first area and the pair of left and right second areas and the entire area of the second boundary between the pair of left and right second areas. A seating cushion characterized in that a gap formed by removing a material is provided.   The seating cushion according to claim 1, further comprising a stealing recess at each of front left and right corner portions of the cushion material having a rectangular or substantially rectangular shape in plan view.   The seating cushion according to claim 1 or 2, wherein the cushioning material is made of latex foam provided with a positive resilience having a recess having a through hole or a recess.   The seating cushion according to any one of claims 1 to 3, wherein the base sheet is made of urethane foam.   The seating cushion according to claim 3 or 4, wherein the thickness of the cushioning material is 15 to 29 mm, the thickness of the base sheet is 5 to 15 mm, and the width of the gap is 5 to 15 mm.   The seating cushion according to any one of claims 1 to 5, comprising the base sheet, the cushioning material, and a flexible cover having air permeability that covers the base sheet and the cushioning material.

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